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A semi-solid lithium flow battery reactor, battery system and working method

A flow battery, semi-solid technology, applied in the field of semi-solid lithium liquid flow battery reactor and battery reactor control system, can solve the problems of battery short circuit, increased battery internal resistance, serious polarization and other problems

Active Publication Date: 2020-02-07
南京竞予能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The semi-solid lithium flow battery reactor of the existing structure has the following problems: 1) In order to prevent short circuit, the battery reactor uses a thicker and less porous isolation layer, so that during the charge and discharge process, the positive and negative electrode suspensions The active material in the battery is embedded in the micropores of the isolation layer, blocking the isolation layer, increasing the internal resistance of the battery, and causing serious polarization; layer, which can improve the permeability of battery ions, but the nanoscale conductive particles in the positive and negative electrode suspensions are easy to penetrate into the isolation layer and form a bridge, resulting in a short circuit inside the battery

Method used

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  • A semi-solid lithium flow battery reactor, battery system and working method
  • A semi-solid lithium flow battery reactor, battery system and working method
  • A semi-solid lithium flow battery reactor, battery system and working method

Examples

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Embodiment 1

[0054] This embodiment provides a semi-solid lithium flow battery reactor 800, including a battery frame, a positive electrode chamber 200, a negative electrode chamber 401, a positive electrode manifold 500, a positive manifold 701, a negative manifold 702, a negative manifold 703, and a positive manifold. Liquid inlet 501, positive liquid outlet 704, negative liquid inlet 705, negative liquid outlet 706, first positive guide rod 707, second positive guide rod 708, first negative guide rod 709, second negative electrode The guide rod 710 , the first diversion cavity 600 ; the second diversion cavity 801 ; the first confluence cavity 802 ; and the second confluence cavity 803 .

[0055] The positive electrode cavity 200 includes two layers of porous positive electrode current collectors 103 with the same polarity, a diaphragm 101, and two insulators 201. The insulator 201 is provided between the edges of the two layers of porous positive electrode current collectors to form a f...

Embodiment 2

[0066] In this embodiment, several cavity heights of the positive electrode cavity 200 , the negative electrode cavity 401 and the isolation cavity 102 are provided, as shown in Table 1:

[0067] Table 1 The cavity heights of the positive electrode cavity 200 , the negative electrode cavity 401 and the isolation cavity 102

[0068] serial number Positive cavity 200 Negative cavity 401 Isolation chamber 102 1 0.5mm 0.5mm 0.1mm 2 5mm 5mm 2.5mm 3 10mm 10mm 5mm

[0069] Other contents of this embodiment are the same as those of the first embodiment.

Embodiment 3

[0071] In this embodiment, several types of materials for the separator 101 , the porous positive electrode current collector 103 and the porous negative electrode current collector 104 are provided, as shown in Table 2:

[0072] Table 2 Materials that make up the separator, the porous cathode current collector and the porous anode current collector

[0073]

[0074] Other contents of this embodiment are the same as those of the first embodiment.

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Abstract

The invention provides a semi-solid lithium flow battery reactor. The semi-solid lithium flow battery reactor comprises a battery frame and an electrode cavity. The battery frame is a cuboid with the hollow interior. The electrode cavity comprises an anode cavity and a cathode cavity. The electrode cavity is filled with continuously or intermittently flowed electrode suspension liquid. A straight-through insulation cavity is installed between the anode cavity and the cathode cavity. The height of the insulation cavity is 0.1-1 mm, and the interior is filled with intermittently flowed electrolyte. The invention further provides an electrolyte circulating system based on the battery reactor and a working method. Through the pressure of the electrolyte in the insulation cavity to a porous current collector is regulated by the electrolyte circulating system, the situation of the battery micro-short or polarization increase can be solved, the battery polarization can be effectively reduced, and the battery safety is improved.

Description

technical field [0001] The invention belongs to the chemical energy storage battery technology, and particularly relates to a semi-solid lithium liquid flow battery reactor, a battery reactor control system and a working method. Background technique [0002] Semi-solid lithium flow battery is a newly developed electrochemical energy storage battery technology. It combines the advantages of lithium ion batteries and flow batteries. A new type of secondary battery with low cost and high safety. It can not only be used as a supporting energy storage device for solar and wind power generation systems, but also can be used as a peak shaving device for the power grid to improve the quality of power transmission and ensure the security of the power grid. [0003] The semi-solid lithium flow battery reactor provides a place for the mutual conversion of electrical energy and chemical energy, and is the core device of the semi-solid lithium flow battery energy storage system. It is i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/0202H01M8/0247H01M8/18
CPCH01M8/0202H01M8/0247H01M8/188Y02E60/50
Inventor 陈永翀张晓虎张艳萍张萍
Owner 南京竞予能源有限公司
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